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<h1>Illite</h1>

<h2>Chemical formula</h2>
(K,H<sub>3</sub>O)(Al,Mg,Fe)<sub>2</sub>(Si,Al)<sub>4</sub>O<sub>10</sub>[(OH)<sub>2</sub>,(H<sub>2</sub>O)]

<h2>External links</h2>
<ul>
<li><a href="https://en.wikipedia.org/wiki/Illite">Illite - Wikipedia</a></li>
</ul>
